Wireless communication system, wireless communication method, radio station and program

Abstract

A first radio base station informs a second radio base station about the configuration information of a second carrier, such as NBC or EC, not having an individual first identifier, as the configuration information of the second carrier is correlated with a first carrier, such as BC, having the individual first identifier. The radio station has a function of performing communication with a radio terminal using simultaneously a plurality of carriers included in the carrier set.

What is claimed: 
     
       1. A first base station comprising:
 a memory; and 
 at least one hardware processor coupled with the memory, wherein the at least one hardware processor is configured to:
 support two or more downlink carriers including a first carrier associated with a cell identifier and a second carrier associated with the cell identifier, and 
 send, to a second base station, configuration information related to the second carrier, 
 wherein the configuration information includes:
 a carrier identifier corresponding to the second carrier, 
 bandwidth information corresponding to the second carrier, and 
 information indicating the first carrier. 
 
 
 
     
     
       2. A method for a first base station, the method comprising:
 supporting two or more downlink carriers including a first carrier associated with a cell identifier and a second carrier associated with the cell identifier, 
 sending, to a second base station, configuration information related to the second carrier, 
 wherein the configuration information includes:
 a carrier identifier corresponding to the second carrier, 
 bandwidth information corresponding to the second carrier, and 
 information indicating the first carrier. 
 
 
     
     
       3. A user equipment (UE) comprising:
 a memory; and 
 at least one hardware processor coupled with the memory, 
 wherein the at least one hardware processor is configured to support two or more downlink carriers including a first carrier associated with a cell identifier and a second carrier associated with the cell identifier, and communicate with a first base station using the two or more downlink carriers, 
 wherein the first base station is configured to:
 support the two or more downlink carriers, and 
 send, to a second base station, configuration information related to the second carrier, 
 
 wherein the configuration information includes:
 a carrier identifier corresponding to the second carrier, 
 bandwidth information corresponding to the second carrier, and 
 information indicating the first carrier. 
 
 
     
     
       4. A method of a user equipment (UE), the method comprising:
 supporting two or more downlink carriers including a first carrier associated with a cell identifier and a second carrier associated with the cell identifier, and 
 communicating with a first base station using the two or more downlink carriers, 
 wherein the first base station is configured to:
 support the two or more downlink carriers, and 
 send, to a second base station, configuration information related to the second carrier, 
 
 wherein the configuration information includes:
 a carrier identifier corresponding to the second carrier, 
 bandwidth information corresponding to the second carrier, and 
 information indicating the first carrier.